Mechanical movement



H. A.'RECEN. MECHANICAL MOVEMENT. APPLICATION man nc.27. 1920.

1,403,632, Patented Jan. 17, 1922.

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IIVVENTOR.

UNITED STATES PATENT oerice.

HENRY A. RECEN, OF KOKOMO, COLORADO.

MECHANICAL MOVEMENT.

Application filed December 27, 1920.

vent-ion, such as will enable others skilled in the art to which itappert-a-ins to: make and use the same, reference being had to theaccompanying drawings, and to the characters of reference markedthereon, which form a:-

part 01 this specification.

The object of this invention is to provide means for converting rotarymot-ion into res ciprocating motion, and more particularly forincreasing the power at the end of the stroke. Briefly, the inventioncomprises a rotary curved cam adapted to engage the ends of a blockreciprocable upon the axis of rotation of the cam, so that the camforces the block from one side to the other. At an intermediate point inthe cam, the same approaches the axis of rotation of the cam, so thatwhen said point engages the end of the block, the leverage is greatestdue to the proximity of said point to said axis.

In the drawings:

Figure 1 is an elevation of the cam and block with the guiding coverremoved from the casing which houses the parts;

Figure 2 is a similar view showing the lock at the opposite end 01"" thestroke from Figure 1;

Figure 3 is a vertical section;

Figure 4; is an elevation of the inner face of the cover; and

Figure 5 is a plan of the reciprocating block.

The casing is provided with an external hub 12 in which is journaled asleeve 14 provided with a driving pulley 15. A shaft 16 projects throughsaid sleeve 14. The sleeve 14 carries on its end within the casing 10 arotary disc 18 having a flange 20 projecting outwardly from the disc andforming a cam. This cam extends from the periphery of the disc inwardlyuntil it passes the axis of rotation of the disc and then extends againoutward to the periphery. As shown, the cam is provided in two sectionson the arcs of circles of equal radii but slightly spaced centers, theconnecting portion, as indicated at 2-2, being in the form of anirregular hump which assists in car- Specification of Letters Patent.

"atented J an. 17, 1922.

Serial No. 433,308.

rying up oil for proper lubrication of the parts. It will be understoodthat the lower portion of the casing contains oil. A reciprocable blockhas a longitudinally extending slot 26 which receives the end of theshaft 16, and which permits reciprocation of the block upon said end.The block is provided with a pair of oppositely-extending webs 27, fromthe outer edges of which o-flset arms 28 extend forward, these armsbeing provided at their forward edges with rollers 30, which travel inguide grooves 82 in the inner face of the cover 33 for the nous ing 10.A suitably-disposed slot 34, which is shown in vertical position, isprovided in the block 25 between the offset portions 28 -for thereception of the head of any arm or rod which is to be reciprocated.This head will extend through an elongated slot 35 in the boss 36 on theoutside of the cover.

Each end of the block 25 is provided with an inwardly-extendingvertically-disposed slot 4E0 to receive a web 12 pivoted by means or" apin mounted in apertures 45 in the block, which web carries a shoe 46having an outwardly curved face adapted to engage he inner cam face 20.For the purpose of causing the shoes 46 to operate together, a link 48is provided, this link being angular or L-shaped, as shown, and beingpivoted at 50 to diagonally-opposite ends of the shoes 4.6. In order topermit operation of the shorter end of the link, the block 25 has theadjacent side thereof partially cut away, as indicated at 52 in Figure5. By means or" this link, when one end of one of the shoes is caused tomove inwardly toward the center of the block by the curvature of thatportion of the cam which it engages, the end of the other shoe directlyopoosite will also be moved inward. By this construction one shoe causesmovement of the other in order that said other may be properlypositioned when it in turn is to be engaged by the approaching end ofthe cam. As shown in Figures 1 and 2, one end or" the cam curvessimilarly to the curvature of the adjacent part of the disc 18, so thatthe pointof the cam readily travels in behind the adjacent shoe andslowly comes into engagement with the same. The rotation of the cam willbe clockwise with reference to these views.

From the foregoin it will be seen that the outer end of the cam, asindicated at the right of Figure 1, will engage the adjacent shoe tomove the block toward the left, and that when that portion of the camshown at the extreme left in Figure 1 has been moved around intoengagement with said shoe, the amount of. leverage will be much greaterthan when the shoe was first engaged by the end of the cam due to thefact that said point is closer to the axis of rotation of the cam. Thisincrease in power at the end of the stroke in each direction is ofespecial value in certain machines, such as air compressors, where theIDtLXlHlULIH power of the stroke is required at the end thereof.

I claim:

1. In a mechanical movement a stationary member having an outstandingcircular flange, a rotary member having a cam thereon in the form of anoutstanding flange, and a reciprocable block engaged by said cam andcircular flange for reciprocation by said cam.

i 2. In a mechanical movement, arotary member having a cam thereon inthe form of an irregularly curved outstanding flange, a blockreciprocable within the cam and on the axis thereof, and pivoted shoeson the ends of the block for engagement with the cam face.

3. In amechanical movement, a rotary member having a cam thereon in theform of an irregularly curved outstanding flange, a block reciprocablewithin the cam and on the axis thereof, pivoted shoes on the ends of theblock for engagement with the cam face, and a link connecting diagonallyopposite ends of the shoes.

4. A mechanical movement comprising a stationary member having acircular flange projecting outwardly from one side thereof, a bearingconcentric with said flange, a rotary member pivotally mounted in saidbearing, an outwardly extending arcuate flange on said rotary member,the ends of said arcuate flange rotating in close proximity to the innersurface of said circular flange, a block reciprocable between thecircular flange on the stationary member and the arcuate flange, andmeans to guide said block as it reciprocates.

5. A mechanical movement comprising a stationary member having acircular flange projecting outwardly from one side thereof, a bearingconcentric with said flange, a sleeve pivoted in said bearing, a rotarymember secured to said sleeve, an outwardly extending flange of circularform secured to said rotary member and eccentric with respect to saidsleeve, a shaft passing through the sleeve, a block reciprocabletransversely of said shaft, means to reciprocate said block comprisingthe flange secured to the rotary member and means to guide said block asit reciprocate-s.

In testimony whereof I aflix my signature.

HENRY A. nnonn.

